Document Title: Victron MultiPlus-II InverterCharger Manual (AU Model).pdf
Applies to: Harvok caravans with 48V electrical system and Victron 3kVA or 5kVA MultiPlus-II units
Device Function: Inverter and multi-stage battery charger for AC power management and charging
Key Features
- Dual-function unit: 48V DC to 230V AC inverter + multi-stage charger from AC input
- Supports shoreside power, generator charging, and battery-powered AC supply
- Compatible with Victron Digital Multi Control, Victron GX Devices, and Cerbo GX
Operating Modes
- Inverter Mode: Converts 48V battery power to 230V AC when not plugged in
- Charger Mode: Charges caravan battery using AC input (shore/generator)
- UPS Mode: Seamlessly switches between input and inverter to avoid power interruption
PowerAssist Function
- Prevents generator overload by drawing extra power from batteries when AC input is limited
- Set input limit (e.g. 10A for 3000VA generator) to avoid stalling and enable smooth operation
- Adjustable using Victron Digital Multi Control or VictronConnect app
AC Input Current Setting
| Generator Size | Recommended AC Input Limit |
|---|---|
| 2000VA | 6–8A |
| 3000VA | 10–12A |
| 5000VA | 15A (max default) |
Important: Ensure you reduce the AC input setting below generator capacity to activate PowerAssist effectively.
Troubleshooting
- Overload or low voltage → Check AC input and battery SOC
- Shore power connected but not charging → Verify inverter is not in standby
- Generator stalls when powering van → Reduce AC input limit and enable PowerAssist